CN104102397A - Self-contained touch panel - Google Patents
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- CN104102397A CN104102397A CN201310127848.6A CN201310127848A CN104102397A CN 104102397 A CN104102397 A CN 104102397A CN 201310127848 A CN201310127848 A CN 201310127848A CN 104102397 A CN104102397 A CN 104102397A
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Abstract
The invention discloses a self-contained touch panel. The self-contained touch panel comprises two induction areas. Each induction area comprises a first induction channel, a second induction channel, an edge electrode and a plurality of central electrodes. Each edge electrode independently uses the corresponding first induction channel. The central electrodes share the second induction channel. Each edge electrode is provided with a first gravity center, and the first gravity center represents the occurrence position of variable quantity contributed by the edge electrode. The central electrodes are provided with a second cavity center, and the second gravity center represents the occurrence position of the variable quantity contributed by the central electrodes. The average distance of distance between the first gravity center and each possible contact in the edge electrode is shorter than the average distance of the distance between the second gravity center and each possible contact in the central electrodes.
Description
Technical field
The present invention is relevant to touch-control system, especially to relevant in order to promote the technology of induction result correctness of contact panel fringe region.
Background technology
Along with science and technology is showing improvement or progress day by day, all more and more hommizations of the operation interface of various electronic products in recent years.For example, see through Touch Screen, user can directly make formula, input message/word/pattern with finger or pointer in on-screen options, saves the trouble of input medias such as using keyboard or button.In fact, Touch Screen is comprised of an induction panel and the display that is arranged at induction panel rear conventionally.The position that electronic installation is touched on induction panel according to user, and the picture that display presents at that time, judge the meaning of this touching, and carry out corresponding operating result.
Existing capacitive touch control techniques can be divided into self-tolerant (self-capacitance) and mutual appearance formula (mutual-capacitance) two classes.With respect to mutual appearance formula contact panel, self-tolerant contact panel can be realized by the more simple single-layer electrodes structure of processing procedure, has lower-cost advantage, is therefore widely used in low order electronic product.
Fig. 1 is a self-tolerant contact panel example.In induction region 100 with empty wire frame representation, be provided with a plurality of wide and be similar to separately a leg-of-mutton electrode in right angle (for example electrode 11,12,14,15,17).Because the inductor in order to Detection capacitance variable quantity is quite expensive, in order to save cost, existing contact panel is mostly designed to a plurality of electrodes and shares an inductor.As shown in Figure 1, electrode 11,12 is connected to inductor 13 on first, and electrode 14,15 is connected to inductor 16 first time.Easy speech, the capacitance change that inductor 13 detects on first is the summation that occurs in the capacitance change of electrode 11,12, but not electrode 11,12 each self-corresponding capacitance changes.(N upper inductor and N lower inductor have a numbering to 2*N in a Fig. 1 inductor separately, as i inductor, i=1～2N) capacitance change recording can be transferred into a controller (not illustrating), for this controller, judges according to this position that user touches occurs.Controller can calculate the coordinate x of user's touch location on directions X according to following calculating formula:
Wherein i is the integer index of scope between 1 to 2N, C
irepresent the capacitance change that i inductor records, X
iit is the common center of gravity coordinate of the electrode that represents that i inductor connects.The inductor 13 on first of take is example, the common centre of gravity place (dropping between electrode 11,12) that its corresponding center of gravity coordinate Xi is two electrodes 11,12.
The difficult problem that contact panel shown in Fig. 1 meets with is that the induction result of left and right sides fringe region misses by a mile.Below the electrode in Fig. 1 11,12,14,15,17 is redrawn in Fig. 2 and Fig. 3, the reason that error occurs is described.
If user touches, occur in the position representing with broken circle frame 21 as in Fig. 2, only electrode 11,14 is affected.In this situation, the coordinate x that the capacitance change detecting according to inductor on first 13 and first time inductor 16 calculates there will be no small error.Reason is, although the detected capacitance change of inductor 13 is mainly to be contributed by electrode 11 on first, controller is with the common centre of gravity place (being denoted as P1) of electrode 11,12 but not the center of gravity of electrode 11 represents the position that on first, the detected capacitance change of inductor 13 occurs.Similarly, although first time the detected capacitance change of inductor 16 is mainly to be contributed by electrode 14, controller is with the common centre of gravity place (being denoted as P2) of electrode 14,15 but not the center of gravity of electrode 14 represents the position of first time detected capacitance change appearance of inductor 16.The coordinate x so calculating obviously can round frame 21 places physical location take over.
As shown in Figure 3, if circle frame 21 is not positioned at the marginal position of induction region 100, left side part of circle frame 21 can be touched in theory another electrode 31 and (in fact do not existed, be represented by dotted lines), and then a capacitance change that makes coordinate x be offset (namely making coordinate x approach the true Building X mark of circle frame 21) is left provided.Easy speech, in edge region, due to the balance numerical value that lacks dummy electrodes 31 and may contribute, aforementioned center of gravity P1, the P2 again true Building X mark of distance circle frame 21 are very far away, the coordinate x that controller calculates so have sizable error.
The situation that detection error occurs above-mentioned edge region can cause controller erroneous judgement user's touching intention most probably, and then causes wrong operating result.If for fear of this mistake, give up induction region 100 left and right sides fringe region need not, can cause again the waste of hardware cost.
Summary of the invention
For addressing the above problem, the present invention proposes new self-tolerant contact panel, by the corresponding centre of gravity place of inductor that changes fringe region, produces compared with prior art testing result accurately.
A specific embodiment according to the present invention is a kind of self-tolerant contact panel, wherein comprises two induction regions.Each induction region comprises respectively again one first induction channels, one second induction channels, an edge electrodes and a plurality of contre electrode.This first induction channels is in order to connect one first inductor.This second induction channels is in order to connect one second inductor.This edge electrodes is independently used this first induction channels, and its flat shape is similar to a right-angle triangle.The plurality of contre electrode shares this second induction channels, and the flat shape of each contre electrode is also similar to this right-angle triangle.This edge electrodes has one first center of gravity, represents the occurrence positions of a capacitance change of this edge electrodes contribution.The plurality of contre electrode has one second center of gravity, represents the occurrence positions of a capacitance change of the plurality of contre electrode contribution.This first center of gravity is less than this second center of gravity to one second mean distance that is likely subject to contact in the plurality of contre electrode to one first mean distance that is likely subject to contact in this edge electrodes.
A specific embodiment according to the present invention is a kind of self-tolerant contact panel, wherein comprises two induction regions.Each induction region comprises respectively again one first induction channels, one second induction channels, a plurality of edge electrodes and a plurality of contre electrode.This first induction channels is in order to connect one first inductor.This second induction channels is in order to connect one second inductor.The plurality of edge electrodes shares this first induction channels.The flat shape of each edge electrodes is similar to one first right-angle triangle.The plurality of contre electrode shares this second induction channels.The flat shape of each contre electrode is similar to one second right-angle triangle.The plurality of edge electrodes has one first center of gravity, represents the occurrence positions of a capacitance change of the plurality of edge electrodes contribution.The plurality of contre electrode has one second center of gravity, represents the occurrence positions of a capacitance change of the plurality of contre electrode contribution.This first center of gravity is less than this second center of gravity to one second mean distance that is likely subject to contact in the plurality of contre electrode to one first mean distance that is likely subject to contact in the plurality of edge electrodes.
About the advantages and spirit of the present invention, can be further understood by following detailed Description Of The Invention and institute's accompanying drawing.
Accompanying drawing explanation
Fig. 1 has illustrated an existing self-tolerant contact panel example.
In order to the fringe region of existing self-tolerant contact panel to be described, can there is the reason of larger influence error in Fig. 2 and Fig. 3.
Fig. 4 is according to the electrode configuration schematic diagram in one embodiment of the invention;
Fig. 5 can promote the reason of location correctness in order to the present embodiment to be described.
Fig. 6 is the electrode configuration schematic diagram according to another embodiment of the present invention;
Fig. 7 can promote the reason of location correctness in order to the present embodiment to be described.
Fig. 8 is the electrode configuration schematic diagram according to another embodiment of the present invention.
Fig. 9 is the electrode/induction channels configuration schematic diagram according to another embodiment of the present invention.
Symbol description
100: induction region 11,12,14,15,17: electrode
13,16,18,45,46: inductor 21,61: user's touch location
P1, P2, P3, P4, P6, P7: electrode centre of gravity place
31: dummy electrodes 800: virtual reference line
41,42,41A, 41B, 42A, 42B: edge electrodes
51,52,53: contre electrode 91,92,93,94: induction channels
Embodiment
A specific embodiment according to the present invention is a self-tolerant contact panel, and its electrode configuration as shown in Figure 4.Take virtual reference line 800 as boundary, and the electrode that these flat shapes are separately similar to right-angle triangle can be divided into upper and lower two groups in the Y direction, namely forms two different induction regions.In this embodiment, the electrode that the left and right sides has net bottom pattern is defined as edge electrodes (for example electrode 41,42), and other electrodes without net bottom pattern are defined as contre electrode (for example electrode 51,52).Edge electrodes in this embodiment and contre electrode are roughly wide.As seen from Figure 4, each edge electrodes is used an induction channels (for example independent induction channels 91 of using of electrode 41), i.e. separate connection to capacitance change inductor (not illustrating) separately.Relatively, every two contre electrodes share an induction channels (for example electrode 51,53 shares induction channels 92), are connected to same inductor (not illustrating).In practical application, this self-tolerant contact panel also can comprise in order to touch the controller of occurrence positions according to the testing result judgement of each inductor.
For the explanation correctness that how this electrode is configured in the testing result of fringe region is better than prior art, electrode 41,42,51,52 in Fig. 4 is redrawn in Fig. 5, also present the first inductor 45 in order to the capacitance change of detecting electrode 41, and in order to the second inductor 46 of the capacitance change of detecting electrode 42.If want, be convenient to comparison, can suppose that the electrode 11 in electrode 41,42,51,52 and Fig. 2 is roughly the same at the width of directions X, but in practice not as limit.
When user touches the position representing with broken circle frame 61 in occurring in as Fig. 5, electrode 41,42 can be affected.The capacitance change that the first inductor 45 and the second inductor 46 detect is the calculating basis of touching point coordinates.Because the first inductor 45 is only connected to electrode 41, according to formula one, judging and touching Building X timestamp a little, controller is to represent with the centre of gravity place of electrode 41 (being denoted as P3) position that the detected capacitance change of the first inductor 45 occurs.Similarly, the centre of gravity place of electrode 42 (being denoted as P4) is used to the position that represents that the detected capacitance change of the second inductor 46 occurs.As seen from Figure 5, on directions X, centre of gravity place P3, P4 quite approach the central point of circle frame 61.Will be understood that, situation about illustrating compared to Fig. 2, the coordinate x that the controller in this embodiment calculates can approach the actual Building X mark of circle frame 61.More particularly, thus adopt Fig. 4 electrode/inductor configurations can draw more correct coordinate x, be because on average, several centre of gravity places that controller is included consideration when calculating coordinate x in approach the actual electrode position that occurs capacitance change.
Electrode 41 in comparison diagram 5 and the electrode in figure bis-11,12, center of gravity P3 is obviously less than center of gravity P1 to the mean distance that is likely subject to contact in electrode 11,12 to the mean distance that is likely subject to contact in electrode 41.Therefore, on average, with the Building X of center of gravity P3, mark to represent the detected capacitance change of the first inductor 45, can, than mark to represent the detected capacitance change of inductor 13 on first with the Building X of center of gravity P1, more can reflect the position of actual generation touching.In like manner, several places of other in Fig. 4 edge electrodes all can reach identical effect.
Also be a self-tolerant contact panel according to another embodiment of the present invention, its electrode configuration as shown in Figure 6.The electrode that in this embodiment, flat shape is separately similar to right-angle triangle also can be divided into upper and lower two groups in the Y direction, forms two different induction regions.It should be noted that the edge electrodes in this embodiment is narrow compared with contre electrode on directions X.In addition, no matter be edge electrodes or contre electrode, be all to share an induction channels by two electrodes, for example edge electrodes 41A, 41B share induction channels 93, and contre electrode 51,53 shares induction channels 94.
For the explanation correctness that how this electrode is configured in the testing result of fringe region is better than prior art, electrode 41A, 41B in Fig. 6,42A, 42B, 51,52 are redrawn in Fig. 7, also present the first inductor 45 in order to the capacitance change of detecting electrode 41A, 41B, and in order to the second inductor 46 of the capacitance change of detecting electrode 42A, 42B.If want, be convenient to comparison, can suppose that the electrode 11 in electrode 51,52 and Fig. 2 is roughly the same at the width of directions X, but in practice not as limit.
When user touches the position representing with broken circle frame 61 in occurring in as Fig. 7, electrode 41A, 42A, 42B are affected.Therefore the capacitance change that, the first inductor 45 and the second inductor 46 detect can be used to calculate and touch coordinate a little.According to formula one, judging and touching Building X timestamp a little, controller is with the common centre of gravity place (being denoted as P6) of electrode 41A, 42A, to represent the position of the detected capacitance change appearance of the first inductor 45, and represents with the common centre of gravity place (being denoted as P7) of electrode 42A, 42B the position that the detected capacitance change of the second inductor 46 occurs.Compared in Fig. 2 in order to represent the center of gravity P1 of capacitance change, the Building X of P2 mark, in this embodiment in order to represent the center of gravity P6 of capacitance change, the Building X of P7 mark obviously more approaches the actual Building X mark of round frame 61.Hence one can see that, compared to electrode/inductor configurations of Fig. 1, adopts electrode/inductor configurations of Fig. 6 can draw more correct coordinate x.In like manner, several places of other in Fig. 6 edge electrodes all can reach identical effect.Persond having ordinary knowledge in the technical field of the present invention can understand, and the number of electrodes that shares same inductor is not limited with two.
Should be noted that, although in above embodiment, the configuration of the electrode of upper and lower two induction regions is identical, and concept field of the present invention is not as limit.For example, can make the induction region of the first half there is edge electrodes as shown in Figure 4, make the induction region of Lower Half there is edge electrodes as shown in Figure 6.In addition,, as long as meet the condition of above-mentioned design gravity position, the flat shape of electrode is not also limited with right-angle triangle.
Also be a self-tolerant contact panel according to another embodiment of the present invention, its electrode configuration as shown in Figure 8.In this embodiment, the zone boundary of separating upper and lower two induction regions is not parallel to the straight line of directions X.As shown in Figure 8, the inferior minor face that these edge electrodes, contre electrode are parallel to y direction not has homogeneous length, and the inferior minor face that is not even all edge electrodes is all isometric.Persond having ordinary knowledge in the technical field of the present invention can understand, and the electrode configuration presenting to Fig. 6 is similar, and the edge electrodes configuration in this embodiment also can improve induction result correctness.
By above embodiment, can be found out, main spirits of the present invention produces compared with prior art coordinate x accurately for the corresponding centre of gravity place of inductor by changing fringe region.With regard to Fig. 4, the center of gravity of edge electrodes 41 is designed to be less than contre electrode 51,53 common center of gravity to the mean distance that is likely subject to contact in edge electrodes 41 is to the mean distance that is likely subject to contact in contre electrode 51,53.With regard to Fig. 6, the common center of gravity of edge electrodes 41A, 41B is designed to be less than contre electrode 51,53 equally common center of gravity to the mean distance that is likely subject to contact in edge electrodes 41A, 41B is to the mean distance that is likely subject to contact in contre electrode 51,53.
Will be understood that, the range of application of technological concept of the present invention is not limited to former electrodes shape, electrode configuration mode and inductor configurations mode.For example, each contre electrode in Fig. 4 can be designed to be connected to individually an inductor (namely not sharing inductor).In this situation, still the center of gravity that is less than contre electrode 51 to the mean distance that is likely subject to contact in edge electrodes 41 due to the center of gravity of edge electrodes 41, to the mean distance that is likely subject to contact in contre electrode 51, can be reached the effect that draws more correct coordinate x equally.Again for example, the trace configurations of each induction channels also can be as shown in Figure 9, all from topmost or pull out bottom, without the space between two induction regions.As shown in Figure 9, in this situation, the electrode of partial common induction channels/inductor can not see through wire, is directly connected.
What is more, N the first edge electrodes is (as 41, 42, 41A, 41B, 42A, 42B, N is positive integer) flat shape be similar to one first right-angle triangle, M the first contre electrode is (as 51, 52, 53, M is positive integer) flat shape be similar to one second right-angle triangle, P second edge electrodes (Fig. 4, Fig. 6, the edge electrodes of the below of Fig. 8 and Fig. 9, P is positive integer) flat shape be similar to one the 3rd right-angle triangle, Q second contre electrode (Fig. 4, Fig. 6, the contre electrode of the below of Fig. 8 and Fig. 9, Q is positive integer) flat shape be similar to one the 4th right-angle triangle.One minor face of each first edge electrodes, each first contre electrode, each second edge electrodes and each the second contre electrode is all parallel to same reference direction.
A minor face of this first right-angle triangle has one first length, a minor face of this second right-angle triangle has one second length, a minor face of the 3rd right-angle triangle has one the 3rd length, and a minor face of the 4th right-angle triangle has one the 4th length; The summation of this first length and the 3rd length is substantially equal to the summation of this second length and the 4th length.
This positive integer N equals this positive integer M, and this first right-angle triangle is less than this second right-angle triangle.Or this positive integer N is less than this positive integer M, and this first right-angle triangle is identical with this second right-angle triangle.
By the above detailed description of preferred embodiments, hope can be known description feature of the present invention and spirit more, and not with the above-mentioned preferred embodiment being disclosed, category of the present invention is limited.On the contrary, its objective is that hope can contain in the category of the scope of the claims of being arranged in of various changes and tool equality institute of the present invention wish application.
Claims (7)
1. a self-tolerant contact panel, comprises:
Two induction regions, wherein each induction region comprises respectively:
One first induction channels, in order to connect one first inductor;
One second induction channels, in order to connect one second inductor;
One edge electrodes, independently this first induction channels of use, and its flat shape is similar to a specific polygon, and this edge electrodes has one first center of gravity, represents the occurrence positions of a capacitance change of this edge electrodes contribution; And
A plurality of contre electrodes, share this second induction channels, and the flat shape of each contre electrode is also similar to this specific polygon, and the plurality of contre electrode has one second center of gravity, represents the occurrence positions of a capacitance change of the plurality of contre electrode contribution;
Wherein this first center of gravity is less than this second center of gravity to one second mean distance that is likely subject to contact in the plurality of contre electrode to one first mean distance that is likely subject to contact in this edge electrodes, and this specific polygon phases down along the width of a reference direction.
2. a self-tolerant contact panel, comprises:
Two induction regions, wherein each induction region comprises respectively:
One first induction channels, in order to connect one first inductor;
One second induction channels, in order to connect one second inductor;
A plurality of edge electrodes, share this first induction channels, and wherein the flat shape of each edge electrodes is similar to one first right-angle triangle, and the plurality of edge electrodes has one first center of gravity, represent the occurrence positions of a capacitance change of the plurality of edge electrodes contribution; And
A plurality of contre electrodes, share this second induction channels, and wherein the flat shape of each contre electrode is similar to one second right-angle triangle, and the plurality of contre electrode has one second center of gravity, represent the occurrence positions of a capacitance change of the plurality of contre electrode contribution;
Wherein this first center of gravity is less than this second center of gravity to one second mean distance that is likely subject to contact in the plurality of contre electrode to one first mean distance that is likely subject to contact in the plurality of edge electrodes.
3. a self-tolerant contact panel, comprises:
One first induction region, comprises:
One first induction channels;
One second induction channels;
N the first edge electrodes, is connected to this first induction channels, and N is a positive integer, and this N the first edge electrodes has one first center of gravity, and this first center of gravity represents the occurrence positions of a capacitance change of this N the first edge electrodes contribution; And
M the first contre electrode, is connected to this second induction channels, and M is a positive integer, and this M the first contre electrode has one second center of gravity, and this second center of gravity represents the occurrence positions of a capacitance change of this M the first contre electrode contribution; And
One second induction region, comprises:
One the 3rd induction channels;
One the 4th induction channels;
P the second edge electrodes, is connected to the 3rd induction channels, and P is a positive integer, and this P the second edge electrodes has one the 3rd center of gravity, and the 3rd center of gravity represents the occurrence positions of a capacitance change of this P the second edge electrodes contribution; And
Q the second contre electrode, is connected to the 4th induction channels, and Q is a positive integer, and this Q the second contre electrode has a quadruple heart, and this quadruple heart represents the occurrence positions of a capacitance change of this Q the second contre electrode contribution;
Wherein this first center of gravity is less than this second center of gravity to one second mean distance that is likely subject to contact in individual the first contre electrode of this M to one first mean distance that is likely subject to contact in this N the first edge electrodes; The 3rd center of gravity is less than this quadruple heart to one the 4th mean distance that is likely subject to contact in individual the second contre electrode of this Q to one the 3rd mean distance that is likely subject to contact in this P the second edge electrodes.
4. self-tolerant contact panel as claimed in claim 3, it is characterized in that, the flat shape of each first edge electrodes is similar to one first right-angle triangle, the flat shape of each first contre electrode is similar to one second right-angle triangle, the flat shape of each second edge electrodes is similar to one the 3rd right-angle triangle, and the flat shape of each second contre electrode is similar to one the 4th right-angle triangle; One minor face of each first edge electrodes, each first contre electrode, each second edge electrodes and each the second contre electrode is all parallel to same reference direction.
5. self-tolerant contact panel as claimed in claim 4, it is characterized in that, a minor face of this first right-angle triangle has one first length, a minor face of this second right-angle triangle has one second length, a minor face of the 3rd right-angle triangle has one the 3rd length, and a minor face of the 4th right-angle triangle has one the 4th length; The summation of this first length and the 3rd length is substantially equal to the summation of this second length and the 4th length.
6. self-tolerant contact panel as claimed in claim 4, is characterized in that, this positive integer N equals this positive integer M, and this first right-angle triangle is less than this second right-angle triangle.
7. self-tolerant contact panel as claimed in claim 4, is characterized in that, this positive integer N is less than this positive integer M, and this first right-angle triangle is identical with this second right-angle triangle.
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| CN201310127848.6A CN104102397B (en) | 2013-04-12 | 2013-04-12 | Self-contained touch panel |
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| CN201310127848.6A CN104102397B (en) | 2013-04-12 | 2013-04-12 | Self-contained touch panel |
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| CN104102397A true CN104102397A (en) | 2014-10-15 |
| CN104102397B CN104102397B (en) | 2017-04-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019100349A1 (en) * | 2017-11-24 | 2019-05-31 | 深圳市柔宇科技有限公司 | Touch screen and terminal |
| US10745128B2 (en) | 2015-12-14 | 2020-08-18 | Autel Robotics Co., Ltd. | Battery used for unmanned aerial vehicle and unmanned aerial vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI543048B (en) * | 2009-05-15 | 2016-07-21 | 晨星半導體股份有限公司 | A sensor structure of a capacitive touch panel and the sensing method thereof |
| CN102707823B (en) * | 2011-03-28 | 2016-07-06 | 晨星软件研发(深圳)有限公司 | Touch control sensor |
| CN103677454B (en) * | 2012-09-04 | 2016-09-14 | 晨星软件研发(深圳)有限公司 | self-capacitance type touch panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10745128B2 (en) | 2015-12-14 | 2020-08-18 | Autel Robotics Co., Ltd. | Battery used for unmanned aerial vehicle and unmanned aerial vehicle |
| US11254429B2 (en) | 2015-12-14 | 2022-02-22 | Autel Robotics Co., Ltd. | Battery used for unmanned aerial vehicle and unmanned aerial vehicle |
| WO2019100349A1 (en) * | 2017-11-24 | 2019-05-31 | 深圳市柔宇科技有限公司 | Touch screen and terminal |
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